Using a large pot, bring the Water, Butter, Sugar and Salt to a boil over high heat.,______,As soon as the Water reaches a boil, add the Bread Flour in a single addition. Using a wooden spoon, stir the mixture over medium-high heat until a homogeneous dough forms. Continue to actively stir the dough over the heat ("Dessecher") until it forms a ball that easily pulls away from the side of the pot - approximately two to three minutes.,Chef's Note: When adding the dry ingredients, stir aggressively - the dough should form quickly. Cooking the dough mixture for a couple of minutes causes the starches in the Bread Flour to gelatinize and also dries the dough.,Transfer the dough to a mixer fitted with a paddle attachment and beat the dough on medium speed for several minutes, releasing heat and steam. While the dough cools, beat the Eggs and Egg Yolks together in a separate bowl and set aside.,Once the dough is no longer hot, add the Eggs in no fewer than six additions. After each addition, mix the dough until the Egg is completely incorporated. When all of the Eggs have been added, the dough should be slightly fluid (i.e. when a trench is drawn through the center of the dough, it should fill back in within a couple of seconds).,Chef's Note: It is important that the dough cools slightly before the Eggs are added or else the Eggs will cook. However, if the dough is too cold, the Eggs will not mix in well.,Form and bake the Pate a Choux according to the specific recipe. Most pastries made with Pate a Choux are baked in a high temperature oven (i.e. 400+ degrees Fahrenheit) for over 20 minutes.